Molecular Gas and Star Formation in the Host Galaxy of the QSO I Zw 1 | Zendy

E. Schinnerer | Zendy; A. Eckart | Zendy; L. J. Tacconi | Zendy

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Molecular Gas and Star Formation in the Host Galaxy of the QSO I Zw 1

Author(s) -

E. Schinnerer,

A. Eckart,

L. J. Tacconi

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/305714

Subject(s) - physics , plateau de bure interferometer , astrophysics , galaxy , star formation , spiral galaxy , millimeter , spectroscopy , luminosity , galaxy rotation curve , line (geometry) , astronomy , galaxy formation and evolution , geometry , mathematics

We have investigated the ISM of the I Zw 1 QSO host galaxy with Plateau de Bure mm-interferometry and high angular resolution near-infrared imaging spectroscopy. We have detected a circumnuclear gas ring of diameter ~ 1.5'' (1.8 kpc) in its millimetric CO line emission and have mapped the disk and the spiral arms of the host galaxy in the ^{12}CO(1-0) line at 115 GHz as well as in the H (1.65 um) and K (2.2 um) band . Combining our new mm- and NIR-data with available estimates of the radio- and far-infrared contributions to the nuclear emission, we find strong evidence for a nuclear starburst ring. A comparison to other sources with nuclear activity indicates that these rings may be a common phenomenon and contribute a large fraction of the central luminosity

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